[Bug libgomp/113513] New: [OpenMP] libgomp: cuCtxGetDevice error with OMP_DISPLAY_ENV=true OMP_TARGET_OFFLOAD="mandatory" for libgomp.c/target-52.c

["burnus at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113513

            Bug ID: 113513
           Summary: [OpenMP] libgomp: cuCtxGetDevice error with
                    OMP_DISPLAY_ENV=true OMP_TARGET_OFFLOAD="mandatory"
                    for libgomp.c/target-52.c
           Product: gcc
           Version: 14.0
            Status: UNCONFIRMED
          Keywords: openmp, wrong-code
          Severity: normal
          Priority: P3
         Component: libgomp
          Assignee: unassigned at gcc dot gnu.org
          Reporter: burnus at gcc dot gnu.org
                CC: jakub at gcc dot gnu.org, tschwinge at gcc dot gnu.org
  Target Milestone: ---

When using both OMP_DISPLAY_ENV=true and OMP_TARGET_OFFLOAD="mandatory", the
device has to be initiated early as OMP_DEFAULT_DEVICE (either 0 or -4 =
omp_invalid_device) needs to be known before printing the ICVs.

On my system, this causes
  libgomp: cuCtxGetDevice error: unknown cuda error.

That's with "CUDA Version: 12.3" and "NVIDIA RTX A1000 6GB" with
--with-arch=sm_80.

I am somewhat sure that I have manually tested it before; our tester wasn't
able to remotely set the env vars, hence, I don't know whether it did work
there or not - nor whether it is a regression, depends on CUDA, sm_xx, my card
or ...